Answer
The best time to visit Chiang Mai for pleasant weather is:
- **November to February**: Cool and dry season.
- Average temperatures range from 15°C to 28°C.
- Ideal for outdoor activities and sightseeing.
- Avoid the rainy season (June to October) for a more enjoyable experience.
Practical Chiang Mai planning note: For weather and air quality, check a current forecast and a live air-quality source shortly before the activity. Northern Thailand can experience strong seasonal variation, and conditions differ between the city, foothills and higher mountains.
Updated 2025-08-21